on the face of the base of the leaf. ^lost important distinguishing 

 characters the shape of the internodes, nodes and buds. 



D-109. — Habit inclining to recumbent. Length medium to long. 

 Diameter medium. Shape of the stalk curved. Color dark purple 

 to greenish-red; abundantly glaucous. Internodes medium to long, 

 slightly flattened; typically tumid, especially so in the lower part, 

 making them sub-conical ; furrow shallow or imperceptible. Nodes 

 medium to small, regular in shape ; usually as dark or darker than 

 the internodes, when on the lower part of the stalk, but lighter and 

 greener above ; two or three rows of rudimentary roots. Buds nearly 

 all having started to expand on the standing stalk; scales usually 

 lighter in color than the shoot ; the young buds typically plump, fairly 

 uniform and ovate to oval in outline ; margin narrow, and in the 

 young buds, semi-elliptical at the point ; having inconspicuous lobes 

 on the sides; slightly bearded at the tip. Foliage abundant, dark 

 in color. Leaf medium to broad, medium length, gradually tapering 

 into ;i fine point. Leaf-sheath compressed laterally at the throat, 

 reddish in color, very glaucous ; auricles medium size, sometimes long- 

 pointed on one side of the stalk ; ligula short, with the upper edge 

 more or less pointed in the center. Vestiture of leaf-sheath a few 

 setae in a narrow line on the back. Vestiture of throat of sheath soft 

 hairs on the auricles and adjacent edges of the leaf, and sometiuies 

 pubescent on the surface of the base of the leaf blade. Most import- 

 ant distinguishing characters color and the form of the internodes 

 and the buds. 



D-625.— -Habit erect. Length medium to long. Diameter large. 

 Shape of stalk usually straight. Color light yellowish-green to yel- 

 low ; reddish brown rings at the upper limit of the nodes, especially 

 on the upper portion of the stalk; the portion of the node below 

 the leaf-scar glaucous. Internodes medium to long, nearly round 

 in cross-section; the sides typically nearly straight but sometimes 

 slightly constricted and sometimes a little tumid on the side opposite 

 the bud ; sometimes a little staggered ; furrow broad but shallow. 

 Nodes medium to large; the portion above the leaf-scar long and 

 usually as large, or larger, in diameter than the internode above; 

 rudimentary roots rather far apart, in two or three rows; the de- 

 pressed ring forming the portion below very shallow. Buds large 

 and quite uniform in shape ; typically plump and broadly triangular 

 to ovate in outline ; margin medium to narrow and conforming to 

 the shape of the bud ; often bearded at the apex and barbellatc on 

 the sides of the margin. Foliage medium to scant, color medium 

 green. Leaf medium width, medium length, sub-erect, tapering into 



137 



